From: Jonathan Wakely <jwakely@redhat.com>
Date: Fri, 30 Jun 2023 20:09:01 +0000 (+0100)
Subject: libstdc++: Qualify calls to std::_Destroy and _Destroy_aux
X-Git-Tag: releases/gcc-12.4.0~327
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c4cd53ffd70205b2b136661b3be175dec0ce8d7;p=thirdparty%2Fgcc.git

libstdc++: Qualify calls to std::_Destroy and _Destroy_aux

These calls should be qualified to prevent ADL, which can cause errors
for incomplete types that are associated classes.

libstdc++-v3/ChangeLog:

	* include/bits/alloc_traits.h (_Destroy): Qualify call.
	* include/bits/stl_construct.h (_Destroy, _Destroy_n): Likewise.
	* testsuite/23_containers/vector/cons/destroy-adl.cc: New test.

(cherry picked from commit 33245d6b87a284495304c9952813b6b83d5df99f)
---

diff --git a/libstdc++-v3/include/bits/alloc_traits.h b/libstdc++-v3/include/bits/alloc_traits.h
index a4d06d3fc7ab..5cc52babef83 100644
--- a/libstdc++-v3/include/bits/alloc_traits.h
+++ b/libstdc++-v3/include/bits/alloc_traits.h
@@ -847,7 +847,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     _Destroy(_ForwardIterator __first, _ForwardIterator __last,
 	     allocator<_Tp>&)
     {
-      _Destroy(__first, __last);
+      std::_Destroy(__first, __last);
     }
 
 _GLIBCXX_END_NAMESPACE_VERSION
diff --git a/libstdc++-v3/include/bits/stl_construct.h b/libstdc++-v3/include/bits/stl_construct.h
index 9531222809c6..a081f26adc33 100644
--- a/libstdc++-v3/include/bits/stl_construct.h
+++ b/libstdc++-v3/include/bits/stl_construct.h
@@ -190,7 +190,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 #endif
 #if __cplusplus >= 202002L
       if (std::__is_constant_evaluated())
-	return _Destroy_aux<false>::__destroy(__first, __last);
+	return std::_Destroy_aux<false>::__destroy(__first, __last);
 #endif
       std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
 	__destroy(__first, __last);
@@ -239,7 +239,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 #endif
 #if __cplusplus >= 202002L
       if (std::__is_constant_evaluated())
-	return _Destroy_n_aux<false>::__destroy_n(__first, __count);
+	return std::_Destroy_n_aux<false>::__destroy_n(__first, __count);
 #endif
       return std::_Destroy_n_aux<__has_trivial_destructor(_Value_type)>::
 	__destroy_n(__first, __count);
diff --git a/libstdc++-v3/testsuite/23_containers/vector/cons/destroy-adl.cc b/libstdc++-v3/testsuite/23_containers/vector/cons/destroy-adl.cc
new file mode 100644
index 000000000000..5623842e9b19
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/vector/cons/destroy-adl.cc
@@ -0,0 +1,11 @@
+// { dg-do compile }
+
+#include <vector>
+
+template<class T> struct Holder { T t; }; // { dg-bogus "incomplete type" }
+struct Incomplete;
+
+void destroy(std::vector<Holder<Incomplete>*>* p)
+{
+  p->~vector();
+}